I'm new to all this and hope to one day create some cool new minis (or parts for them) using 3D printing. I already collect and build my own miniatures for Warhammer 40K. I do a spot of scratch building using green stuff and putty, etc and I'm hoping to figure out how to build my own 3D models on the PC. I've started taking a look at Z-Brush... although it's tough going - this is all a bit new to me.

Tips and advice welcome! (Like, what package would you recommend, what materials, etc).